Health experts say pregnant women should be screened for asymptomatic bacteria that can lead to harmful infections.
This latest recommendation comes from the US Preventive Services Task Force.
Experts say the condition occurs when someone has the bacteria in the urine without any of the signs or symptoms of a urinary tract infection.
In pregnant women, it could lead to an increased risk of UTI and kidney infections which can be harmful to both the mother and baby.
But experts say a urine test can easily detect the condition.
The task force says women who are not pregnant should not be screened.
The US Preventive Services Task Force is an independent group of experts that makes recommendations on preventive medications and various screening procedures like mammograms.